Syringe plug



SYRINGE PLUG Filed Feb. ,6, 1948 INVENTOR I I BY I I I 1 ATTORNEYS Patented Aug. 9, 1949 UNITED PA T OFFICE;

Ernest A. Arnold; Monument, Kans. Application February 6, 1948, Serial No. 6,602

2 Claims.

This invention relates to a syringe plug, the

primary object of the invention being to provide a plug into which a syringe [may be readily positioned after the plug has been placed in the opening of the body to be treated, thereby infacility, the body portion also including a hollow expansible section embodying a pressure chamber whereby the walls thereof will expand under excessive pressure to prevent injury to the person using the device. 7

' Still another object of the invention is to provide a plug of this character which will permit of complete flushing of the opening in which the device is positioned, means being provided to liberate the water or fluid forced into the opening during the treatment.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Figure 1 is a longitudinal sectional view through a, plug, constructed in accordance with the invention.

Figure 2 is an end elevational view thereof.

Figure 3 is a sectional View taken on line 33 of Figure 1.

Referring to the drawing in detail, the plug comprises an elongated body portion indicated generally by the reference character 5, the body portion being slightly curved as shown by the drawing, to permit of its application, with facility.

The body portion is constructed preferably of rubber, and provides a solid end section 6 and a hollow section 1, the hollow section being so constructed that the wall thereof will expand to a position as shown in dotted lines, should excessive pressure be directed to the hollow section. The end section 6 is formed with a longitudinally disposed central bore 8 that communicates with the hollow section 1 at its inner end, the outer 2 7 end of the bore extending to the extremity of the solid end section 6, so that-water or fluid used in treating a cavity, may exhaust therethrough. Lateral bores 9'comlmunicate with the central bore. 8 and direct streams of water or treating liquid laterally to create a-swirling'action within the cavity being treated. 1 The outer end of the hollow section 1' or pressure chamber, is closed by means: of the: plug Ill which has an extension that fits into the open end of the hollow section, the plug having an annular groove in which the annular enlargement l rests, locking the plug in position against displacement due to pressure created in the .hollow section 7. To furtherreinforce the hollow section 1, at its outer end, the outer end of the section 1 is enlarged or thickened bythe annular portion l2- a Also formed longitudinally of the solid end section and disposed adjacent to the outer edge thereof, is a longitudinal bore l3 that extends from the outer end of the solid end section and passes through the outer surface of the solid end section at a, point substantially intermediate the ends of the body portion, where the discharge end of the bore [3 is normally closed by means of the plug M. It will, of course, be understood that when it is desired to use the plug in flushing a cavity, the plug l4 (may be removed and a discharge tube fitted therein. With the discharge tube fitted within the discharge end of the longitudinal bore l3, it will be obvious that water or flushing fluid directed through the plug into the cavity, will find its way from the cavity, through the bore l3, providing a continuous flushing. This longitudinal bore I 3 may also be used should it be desired to replace the water or flushing fluid from the cavity with hot water, after the water within the cavity has become cooled. By opening the discharge end of the longitudinal bore, the Water Within the cavity may be discharged, whereupon the plug I 4 is replaced and the cavity filled with hotter water. The reference character l5 indicates a syringe nozzle which is positioned within the central opening of the plug ID, the plug being made preferably of rubber, so that the wall of the opening will grip the nozzle and insure against leakage at this point which would, of course, reduce pressure in the plug proper.

From the foregoing, it will be seen that due to the construction shown and described, I have provided a plug which may be effectively used in connection with a syringe to close the cavity in which the syringe is positioned for flushing the cavity.

With the plug forming the subject matter of this invention, it is obvious that the plug may be used with various types of syringe nozzles with assurance that the water or cleansing fluid used with the device, will be prevented from exhausting from the cavity, between the wall of the cavity and outer surface of the plug, to the end that the pressure created within the pressure chamber will act to direct the fluid into the bore of the substantially solid section.

It will further be seen that as the pressure in the pressure chamber increases, the wall of the pressure chamber will be expanded causing the plug to frictionally engage the wall of the cavity in which the plug is held, in such a way that the plug will remain within the cavity under such excessive pressure.

What is claimed is:

1. An applicator plug for use in providing a fluid tight connection between the nozzle of a syringe and a cavity treated by the syringe, comprising an elongated rubber body, said body being substantially solid for a distance of approximately one-half of its length, the remaining portion of the body being hollow providing a pressure chamber, an annular enlargement formed at one end of the pressure chamber, a plug having an annular groove, fitted within the pressure chamber and in which groove the annular enlargement rests, securing the plug within the pressure chamber closing the outer end of the pressure chamber, said plug having an opening through which a syringe nozzle is extended and held within the pressure chamber, and said solid portion of the body having a central longitudinal bore communicating with the pressure chamber '4 whereby liquid directed to the pressure chamber is directed to the bore for treating the wall of the cavity in which the plug is positioned.

2. An applicator plug for use in providing a fluid tight connection between the nozzle of a syringe and a cavity treated by the syringe, comprising an elongated body portion, said body portion comprising a substantially rigid rubber section for insertion in a cavity, a pressure chamber formed at one end of the body portion, said body portion having a bore extending therethrough and communicating with the pressure chamber, the bore being disposed centrally of the body portion, means for supporting a syringe nozzle in one end of the pressure chamber, and said body portion having a second bore extending longitudinailythereof adjacent to the surface of the body portion through which liquid discharges from the cavity in which the plug is positioned,

the latter bore communicating with the atmosphere at a point intermediate the ends of the plug.

ERNEST A. ARNOLD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 334,316 Ward et al Jan. 12, 1886 442,558 Trott Dec. 9, 1890 851,530 Lamport Apr. 23, 1907 933,578 Perkins Sept. '7, 1909 FOREIGN PATENTS Number Country Date 429,880 Germany June 3, 1926 

